摘要
在计算岩石压缩系数的方法中，弹性模量法已被广泛应用。通过对弹性模量法的实例计算，指出模量法存在一定误差，主要表现在由模量法计算出的多孔介质的孔隙压缩系数比无孔的岩石基质压缩系数小，不符合弹性力学的原理；依据弹性力学理论推导出新的孔隙压缩系数表达式，对比分析了不同岩石孔隙压缩系数的计算方法及其对动态地质储量的影响。分析结果表明，新方法的计算结果具有合理性，能够为油气储层岩石压缩系数的预测开拓新思路。
Elastic modulus has been widely applied in the calculating methods of rock compressibility coefficients. Through the practical calculation by elastic modulus, the existed error of the method is mainly shown that the calculated pore compressibility coefficient of the porous media is smaller than that of the rock matrix with non-porous media. The above result is contrary to the principle of elastic mechanics ; the new expression of the pore compressibility coefficient is derived with the help of the above theory and moreover the different calculating methods of the coefficients are analyzed and compared. Meanwhile, the influences of these various methods on dynamic OOIP have been made clear. The analyses results show that the new calculations are reasonable. Moreover, the new calculating method initiates a new idea and approach for the prediction of the compressibility coefficient in petroleum reservoir rocks.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2011年第3期110-112,共3页
Petroleum Geology & Oilfield Development in Daqing
基金
基金项目：国家自然科学基金项目（50874094）与国家重点实验室开放式基金项目（PLN0802）联合资助.
关键词
岩石
孔隙压缩系数
关系式
变形
剪切模量
rock
pore compressibility coefficient
relational expression
deformation
shear modulus
